Hepatic porphyrias is a form of porphyria in which toxic porphyrin molecules build up in the liver. Hepatic porphyrias can result from a number of different enzyme deficiencies. Examples include (in order of synthesis pathway): Acute intermittent porphyria Porphyria cutanea tarda and Hepatoerythropoietic porphyria Hereditary coproporphyria Variegate porphyria See also Erythropoietic porphyria Givosiran References External links www.drugs-porphyria.com www.porphyria-europe.com Porphyrias